Ventilator



Patented Oct. 23, 1923.

UNITED SITES c 1,471,811 ATENT OFFICE.

cnannns v'. Swenson, or vEL'vA, 'NORTH DAKOTA.

VENTILATOR.

Application sied May' 12,

To all w/zom t may cof/werfe:

Be it known that I, CHARLES V. SWAN- soN, a citizen of the Unitedy States, residing. at Velva, in the county ot lvlcHenry and State of North Dakota, have invented certain new and useful Improvements in Ventilators, of which the following is a speciti-- cation.

My invention relates to ventilators and the object is to provide an efficient and easily operated device the use of which will provide proper circulation of air in a room or rooms of a building. rIhe device is particularly adapted for admit-ting outside atmosphere without opening the regular windows of a building and is so constructed as to admit such air without a direct draft.

In the accompanying drawings Fig. 1 is an outside elevation off a portion of a wall having a window frame embodying my improvements.

Fig. 2 isv a right hand side elevation or edge view of Fig.Y 1, showing portions of the wall above and below the window frame.

Fig. 3 is an enlarged sectional elevation on line 3-3 in Fig. 1.

Fig. e is an inside elevation of a` window frame embodying my improvements.

Fig. 5 is an enlarged sectional elevation as on line 5-5 in Fig. 4.

Referring to the drawing by reference numerals, 5 is the wall of a building, 6 are the outside casings, 7 the inside casings, 8 the lintel, 9 the sill and 10#11 the upper and lower sash of a window, and 12 are the parting strips for the sash. 13 are the vertical wall members between the inner and outer casings.

My device is mounted in a housing above the regular lintel 8 and formed by extending the casings and walls 13 above said lintel the casings, walls 13 and the lintel 8 Jforming three sides of said housing, the fourth or top side of it being formed of horizontal members L- a of the casings secured to a secondary lintel 14 spaced above lintel 8 a predetermined distance, preferably about inches. The housing is in effect a rectangular vent opening above a regular window. In said opening I mount in vertical spaced relation a series of light skeleton frames of which 15 is a detachable outer frame normally in place about flush with the outside casing 6 and held by means such as turn buttons 17 on the casing (see Figs. 1 and 3). Said frame-s 1923. Serial N0. 638,650.`

covered by a light, line-mesh wire netting 18. Next to said frame 15 and within theL Y 23 stretched on it, and said frame being suitably secured either permanently as with nails 24 or removably held by any suitable means (not sho-wn).

The inner opening of the ventframe or housing is normallyclosed by a shutter-consisting of a plurality of horizontally arranged wings 25 hinged. at their opposite ends o-n pins 26 bearing in the vertical walls 13. Two of said pins are shown for the two wings25 in Fig. 5 as extended through the wall 13 and provided each with a rocker arm 27, said arms being connected by a link 28 and the upper one having an eye28a engaged by the upper end cfa vertically ar ranged tension spring 29 the lower end of which is Secured as at 30 in the wall 13 in a manner to keep the spring in tension at all times. Above said rocker arms 27 I mo-unt a rvsheave 31 on a pin 32. A cable 33 is suitably secured as at 34 to ythe upper rocker arm, passed over the sheave 31 thence downwardly and connected to the upper end of a rod 35 the lower end of which yis secured to a collar 36 on a stud 37 projecting horizontally through a vertical slot 38 in the casing member 7. Said slotmay be protected by a slotted metal plate 39 secured on the casing, the protruding end of the stud being provided with a thumb screw 40 which may be used to hold the stud at any elevation in the slot. It will be readily understood that when the thumb screw is loosened the spring 29 pulls the rocker arms down thereby normally holding the shutter wings or blades 25 in vertical position. By pulling the thumb screw and its stud 37 toward the bottom of the slot the bight of the cable 33 connected to the rocker arms 27 pulls them upwardly and thereby swings the shutter blades away from the frame and permits outside atmosphere to enter a room in which the device is installed. The outside air circulates through the device, first going through the fine-mesh screen 18, then defie'cted inwardly and upwardly on the plates 20, thence through the cloths 23 and into the room over the blades 25; Any moisture or line snow which may possibly be forced through the line-mesh screen 18 will be deflected outwardly again on the sloping blades 20. The inner cloths 23 will break the force of any wind which may get through screen 18 so that all the air which finally circulates into the room over the tops of blades 25 circulates gently within the room without any discomfort to the occupants. Sufficient fresh air for all ordinary purposes may thus be admitted and the amount of it is easily regulated without opening the window itself.

In Fig. 5 7b is a removable part of the casing 7 which may be secured to the casing in any suitable manner, as with screws 7c, or removed when access to the sheave 3l and adjacent parts is desired.

What l claim is:

A ventilator consisting of a frame formed integral with a window frame and above the movable sash of said window, and means mounted in said frame and the window frame for controlling the passage of air through said ventilator frame, said means Vone of said rocker arms and to the window frame to normally hold the rocker arms down and the shutter blades in closed position, and means for opening the shutter against the tension of said spring, said opening means consisting of a sheave rotatably mounted in the ventilator frame above and adjacent the said rocker arms, a cord attached to said rocker arms and adapted to be passed upwardly therefrom over the sheave, thence downwardly within the window frame, a vertically slidable securing means for holding the lower end of said cord at any desired position for the purpose described.

In testimony whereofl aliiX my signature.

CHARLES V. SWANSON. 

